Throttle control



NOV. 28, 1944. J GRlGGs r 2,363,727

THROTTLE CONTROL Filed Jan. 13, 1941' s Sheets-Sheet 1 24' a 2 0 I2. 7 Z! 30 I8 i 22. 60 T 1 T0 BRAKES L 25 42 c 4 r- A i J 5 4 ,L

UV I 1 i 26 C27 3 John L.Gr1' g 8 INVENTO ATTORNEY.

J Nov. 28, 1944. G s 2,363,727

THROTTLE v CONTROL Fiied Jan. 13, 1941 :s Sheets-Sheet 2 IN VENTOR 4:1 ATTORNEY.

John L. Gr{yys Patented Nov. 28, 1944 n Emmanue v.- Jo nfnGrig 'sQwieime alisiTex Q =AppiicetionJanuaa'y13,ieflgeienialflo;3541;2855 Y J 'zi'lhisi invention rrie'lates oto'eani improvement iin tintottle- :controisfor internal icombustion rengines landithel ;-like, .of v:the character :-usua;lly= provided --withs:a a'governor :constructedeto limit' the -rmaximumaspeed 'ofrztheeengine. M v V -.:5Heretofoi'e,.intemal combustion: engines have ibeen-econtroiled 'fbyz thmfitle imechanism m eme sofllbeing: set to; imaintainiiajconstant operating :speed S12E01 :the saeng-irie; and in other instances, governors have been ;p1tovided for ilimiting lthe 7 maximum: speedqof. operation thereof; l'gmoeitlier in instance; it :is desirableifreq ientlyi to'provide :fior' .rmamialncontrola over the speed of the =5 engine :that way be 'madei instantly available-when .desired n iEL'he objectvof this inventionsgi -tozgproizidei for .1:he::operation :ofi the engine:eta;enn ranuellyv controlled set speed that may:belreleased yhowever' sneazch-rofri sone directio iagainst ithe ztension'0f=avsp1=ing-LL 1 '-rmhezintake imenifold 'l-t-is ishown as :provided :also with as. igovernor iof *conyentional.structure,

ifiziwith lever 31- :.Sa.id lever is piyotally .;mounted -at 8 konthezsfioon boardsa of the, motor vehicle in the usilalwways. 1A:fotot ped l orea ee er t r- 4:0 is tattachedr'towthe lever a;ndtextendsethroughrrthe :fioor shomds operator; for: movingthe -1ever 5| in of which: the maximum operating: speed of the ta leafspring won t-the: free end of which-the instantaneously ifor manual r control .'of ithe eny *gine hy .the: operatorleithento"reduce" or increase the speed zofs operation: of-l'ithe engine:

.Thiszaobj'ecti is accomplished by synchronizing ithecmanualiand govmor'i controls of :Ithe engine :withzrprovisionrby which ithesengine imay be opvotated; attn wet speed fathat ma rb eirreleased inist'antaneouslm "restoi ingi the' tcontroi' to manual I operation; p Azrvpreferred .iembddiment of the inventioni is illustrated 1 in :thesaccompanying drawings, in

which:

Lisa fragmentary siderelevaztion ofaaipor- ;tion- :of {aninternal: :icombustion 3 engine; showing f the invention ;appli'ed-ithereto,qwith arpa'r't section; t 1" 7 :Y-FignZ is an enlarged si detelevati'on ofzthe contr'olmrod rand rlevere assembly=i-.detached;

Fig; 3 is aa side elevation xofxan automatic Igovennor modifiedrinzaccordance zwith'. this zinven tion, {with the cover plate removed; I 1 1 1; 4e;is an:enlarged;side elevation-"of the. control mechanism tromxonen'side; i

'itoi-warxrb 44i isqshown i3.,.- sub stantiallyv iin the posinon-where ithe-ggovemor control is: open for .sengine mayaebetlimitedgawhich :iS, done fusuallysin the rtypevof-z'zgoyernor illustrated: by the adjustment'lfd ffira' Qontnol. arm 13 (Fig. '3) why rmeans-hf maximum operatingspeed of. the. engine,- tandithe Spring M; may he swung. .downward' imEigWS. to .anyqdesined nsetposition .for. limiting the .speed ..Figrfliiszaisimiiar-yiew.fromis'the opposite 'side thereof; e I v a n Y {Fig.vfi i :iS *a. .erticali cross: section therethrough on thedine- :6,-j+-6:of iiig; 42; I ,,-;Fig.j, I7 is ..a. diagrammatic View :=ofi1the control tracks gin-{one conditionyend i of control operation. I

The invention is vshown i as? applied to: an ternal combustion enginesof the character usually employed in a, motor'-vehic1e,'-inwhich the-"engine is -.designate.dgenerally z'by :th'e r-numeral I ;and

issuppliedwith fuel through '53.!) rintake.;manifiold Zi-rom a carburetor 3.

I :Brovisionnisi made .in this' inyention:fof. .man-- mally shiftingithe governor fiplilig-J 4 ifromeaiowzeredzposition, reducing; the speed :of poperation of the engine; to tan mpemposition-f or maximum speed-Dflhnem o the n in s e to the-i ppenationto the-Pth-rottle montrol. {This is e plished :by 1ocko1 t=- arm; 1| 6 inposition :to

"engage wand-dome; upward; the free end of the v goyernorgspring; H-whenrsaid arm-1B i smoved from the full-line oe. dotted line position in Rig. :3. unsupported on-ashaftd I .joux na'led rain the-housing of the governor 4,2, ,andmerrying arm 48 on' the outer -end -theretot; rgThisga-nm i8 rhasean openmgl astliereinrslidcoining "one tend qofarr'od 2-20,, the :opposite. hiGhqIfOdvZ gpiyotelly :connectedmith end r etsieete bracket 2l :-slidabiy.meceivinggthe throttle A-ispningrl-l isnsieeved'; over the free end e grodiifleand:tiszeinterposedbetween: a stop g. thereon fiend the adjac.ent rj side of vthe -arm mate provide iazresilienttabutmenti fior the: movemerit aoi;;sai'd1 arm Mjnponslidingzmoyement of 29 :1?0 position within convenient position of the adjusting means; 15' v the rod 26 in one direction. The arm I8 is moved in the opposite direction by a spring 24 connected therewith, as shown in Fig. 1. The lostmotion connection is provided between the rods have provided control mechanism in the form of a supporting plate 26 mounted in a fixed position relative to the engine I, as on a support 21 forming a part of the motor vehicle frame structure. The supporting plate 26 is elongated as shown in Figs. 4 and and has longitudinally extending guideways 28 therein slidably receiving a block 29. The block 29 is adapted to be moved lengthwise of the guideways 28- by the lever I, the lower end portion of which is bifurcated at 30 and receives in the bifurcation thereof a pin 3| attached to the block 29, whereby swinging movement of the lever I causes longitudinal sliding movement of the block 29.

A guide arm 32 is pivotally,supported at 33 on the block 29 and carries a pin 34 on the free end thereof which pin 34 is in position to ride upon a track 35 rigidly fixed to the inner side of the supporting plate 26 at one side of the block 29, as shown in Fig. 6. The pin 34 is held in a riding position on the track 35 by aspring 36 connected with the guide arm 32. The track 35 has a main inclined portion designated 35a in.

Figs. '7 and 8, from the outer end of which depends an oppositely inclined portion 35b termimating in an outer end portion 350 adapted to receive and guide the pin 34, as hereinafter described. Spaced above the portion 350 of the track is a guide stop 31 arranged substantially the track portion 35a. In this position, the guide pin 34 is retained in a pocket 46 between the end of the switch arm 38 "and the guide stop 31 directly over an elongated abutment 41 fixed to the inner side of the supporting plate 26.

In the operation .of this control, the governor -|2 is set initially by the adjusting means I5 for a predetermined maximum speed of operation of the engine, and the collar is adjusted also on the link 6, so as to provide for sufficient movement of the arm 5 to open the throttle valve 4 to an extent slightly in excess of the maximum -volume of opening of the throttle valve provided in the governor I2, This will permit the manual acceleration of the engine up to the governor speed, thus allowing the governor to function without interference by the manual control.

' In the operation of the accelerator pedal I0 to open the throttle valve 4, the movement of the in longitudinal alignment with theinclined portion 350. of the track, but spaced therefrom, and

supported upon the inner side of the supporting plate 26. I

Interposed between the track portion a. and

the guide stop 31 is a switch'arm 38 constructed with a pointed end arranged substantially at the V juncture between the track portions 35a and 35b,

and with an upper surface inclined therefrom terminating in an end lip 39 overlapping the lower end of the guide stop'31, and spaced therefrom a distance at least as great as the diameter 1 of the guide pin 34 for passage of said pin therebetween and between the end of the guide stop 3'! and the switch arm 38. Said switch arm 38 is supported on a shaft 40, journaled in the supporting plate 26 and having a bell crank lever 4| fixed on the outer end thereof. One end of the bellcrank lever 4| has a spring 42 connected therewith, while the opposite end thereof underlies one arm of a bell crank lever 43 pivoted at 44 to a side of the supporting plate 26, while the other arm of said bell crank lever 43 is pivotally attached to a connecting rod 45, extending therefrom to the brake actuating mechanism of the vehicle. The connection is such that the application of the brakes to set positions will move the connecting od 45 in the'direction indicated by the arrows in Figs. 1 and 4, tripping the bell crank lever 4| and swinging-the switch arm 38 from the position shown in Figs. 5 and 7 tothe position shown in Fig. 8. This will allow the guide pin 34 to move backward from a position at one end of the switch arm 38 directly to lever I causes corresponding swinging movement of thebifurcated portion 30 thereof, and through the pin 3| slides the block 29along the guideways 28 to move the guide arm 32 lengthwise of the supporting plate 26. During this movement, the guide pin 34 rides initially on the track portion 35a, as indicated in Fig. 7. The continued movement of the lever 'I by the accelerator pedal causes the guide arm 32 to move the guide pin 34 beyond the upper end of the track portion 35a, where it will ride over the upper surface of the switch arm 38 and pass over the endlip 39, dropping ontothe guide stop 31 under the influence of the spring 36, thence into the pocket 46 due to the presenceof the lug 41. This locks the accelerator'and throttle in advanced open position-maintaining this condition without the necessity for the operator .to hold the accelerator pedal 1..

However, if. the operator desires an increased his 6 foot on .speed of 'operation of the engine, it is necessary merely to depress the footpedal I0 further, which -moves the guide pin 34 out of the pocket 46, as

indicated bythe arrowsin Fig. 7, where it drops onto the track portion35c and continues thereon to the extent necessary according to the depression of the foot pedal. Then when the foot pedal is released, the pin 34'follows back along the track portions 350, 35band under thepoint of the switch arm 38, onto the track portion 350. to its initial position.

In the event that itbecomes necessary to apply the brakes instantaneously, when the guide pin 34 is held in the pocket 46, without sufficient time first to release the guide pin from said pocket by furtherdepression of the accelerator pedal I0, provision is made for'opening the pocket 46 automatically, as indicated in Fig. 8. This is accomplished by the connection 45 to the brake rigging or brake operator, through which the movement thereof in applying the brakes swings the bell crank lever 43 to trip the bell crank lever 4| (Fig.4), andthus rotate 'theshaft 40, carrying the switch arm 38, in the direction indicated bythe arrow in Fig. 8, which allows the guide pin 34 to move from the pocket 46 direct]; along the 'upper surface of the lug 41 to the upper end of the track portion'35a, thence to its :iFnitial position as indicated-by the arrows in The adjustable collar 25 is set on the link 6 in such position. that the operator may, at will, advance the accelerator to such an extent asto lock out the governor I2 by extended movement of the link 6 until the collar 25 engages the sleeve bracket 2| and moves the latter forward therei fastener engine under thecontrol of the throttle L Then the when'the accelerator pedal I is released,'the

spring 24 returns the arm I8 to its initial position releasing the governor I2 and allowing it to remain in its operative position to control the maximum operating speedof the engine.

This throttle control is particularly desirable for motor vehicles where the drivers desire to travel at a constant predetermined speed, and

at the same time find it necessary to have the control mechanism sufiiciently flexibleto provide for increased speed if the demand arises or to decrease the speed instantaneously in an emer-' gency.

I claim:

-. In zlthrottle icontrol =rnechanism,- the com- -bination of a' main" throttle, an accelerator, means I operatively connecting the accelerator with the 'main throttle, control means-for the accelerator including a support having 'guidewaystherein, a

blockslidajblyf mounted in theguide'ways', a guide arm pivota-llyfcarried by the block and-having support in" position for" guiding the movement of the pin therealong, means for locking the pin in an advanced position relative to the track, said \locking means including a switch arm constructed for engaging and holding the guide pin in an advanced position of the accelerator, a shaft supporting said switch arm forswinging movement, and. means for moving said-switch arm to release the guide pin therefrom for return to the track.

1. In throttle control mechanism, the com bination of a main throttle, an accelerator, 4 means for connecting the accelerator with the. main throttle for operating the same, and means for automatically locking said accelerator in a 6. In throttle control mechanism, the [combination of an accelerator adapted to be connected with a throttle, and control means for the accelerator comprising a support, means mounting said support for sliding movement, a guide arm pivotally carried by the support and having a guide pin thereon, a track in position for guiding predetermined advanced position by the movement of the accelerator to said. advanced posi-= tion, said locking means being constructed to release the accelerator upon further advancing movement thereof in 'said same direction of movement past said advanced position.

2. In throttle controlmechanism, the combination of a main throttle, an accelerator, means operatively connecting the accelerator with the main throttle, control means for the accelerator including a movable member operatively connected with the accelerator for movement thereby, a guide member connected with the movable member, and locking means in position for engagement by the guide member to hold the movable member and the accelerator in an advanced position.

3. In throttle control mechanism, the combination of a main throttle, an accelerator, means operatively connecting the accelerator with the main throttle, controlmeans for the accelerator including a support having guideways therein, a block slidably mounted in the guideways, a guide arm pivotally carried by the block and having a guide pin thereon, a track connected with the support in position for guiding the movement of the pin therealong, and means for locking the pin in an advanced position relative to the track.

4. In throttle control mechanism, the com-' bination of a main throttle, an accelerator, means operatively connecting the accelerator with the main throttle, control means for the accelerator including a support having guideways therein, a

block slidably mounted in the guideways, a guide arm pivotally carried by theblock and having a guide pin thereon, a track connected with the support in, position for guiding the movement of the pin therealong, means for locking the pin in an advanced position relative to the track, said locking means including a pocket for receiving and holding the pin and having an outlet at one side thereof for releasing the pintherefrom upon guide.

the movement of the pin therealong, and means for'ilo'cking the pin in an advanced position relative to the track;

7. In throttle control mechanism having an accelerator, control means-for the accelerator com-.

prising a supportjmeans mounting said support for sliding movement, a guide arm pivotally carried by the support and having a guide pin thereon, a track in position for guiding the movement I of the pin therealong, and means'for locking the pin in an advanced position relative to the track.

8.. In throttle control mechanism having an accelerator, control means for the accelerator comprising a trackway, a guide mounted on the trackway, means for connecting said guide with the accelerator for actuation thereby, and means for lockingthe guidein an advanced position relative to the trackway, said locking means including a pocket for receiving and holding the 9. In throttle control mechanism having an accelerator, control means for the accelerator comprising a trackway, a guide mounted on the trackway, means for connecting said guide with the accelerator for actuation thereby, and means for locking the guide in an advanced position relative to the trackway,, said lockingmeans including a pocket for receiving and holding the guide and having an outlet at one side thereof for releasing the guide therefrom uponadvanced movement of the accelerator connecting means.

10. In throttle control mechanismhaving an accelerator, control means for the accelerator comprising atrackway, a guide mounted on the advanced movement of the accelerator, and an I extended track portion in position to receive the pin after release from the pocket and to direct the same backward to the first-mentioned track.

trackway, means for connecting said guide with the accelerator for actuation thereby, means for locking the guide in an advanced position relative to the trackway, said locking means including a pocket for receiving and holding the guide and having an outlet at one side thereof for releasing the guide therefrom'upon advanced movement of the accelerator [connecting means, and an extended track portion in position to receive the guide after release from the pocket and to direct the same backward to the first-mentioned trackway.

11. In throttle control mechanism having an accelerator, control means for the accelerator comprising a, trackway, a guide mounted on the trackway, means for connecting said guide with the accelerator for actuation thereby, means for locking the guide in an advanced position relative to the trackway, said locking means including a pocket for receiving and holding the guide, said pocket being constructed for opening movement, and brake-actuated means for opening-said pocket to release the guide therefrom.

12. In throttle control mechanism, the combination of an accelerator adapted for connection with a throttle, means for locking said accelerator in an advanced position automatically 

